Electric leather sofa based on human engineering

Abstract

The invention relates to the technical field of electric sofas, in particular to an electric leather sofa based on ergonomics, which comprises a waist support mechanism and a soft support mechanism. The radian and the height of the waist supporting mechanism are correspondingly adjusted through the second electric telescopic rod and the first electric telescopic rod, and the waist supporting mechanism can be adjusted to be in various supporting shapes matched with the long lumbar vertebra, the short lumbar vertebra, the large body shape, the small body shape, the lumbar vertebra diseases and the like according to the physiological characteristics of the lumbar vertebra of different users. The soft supporting mechanism provides corresponding support for the thoracic vertebra and the sacral vertebrae of the human body, it is ensured that the back of the human body is optimally supported, and the sacral vertebrae supporting air bag and the response area can lift the back waist and the thigh roots of the human body to a certain degree through pressure changes of the sitting pressure area and the response area of the hip supporting air bag for people with special body shapes. Therefore, the sofa can be effectively prevented from sinking, the correct sitting posture is kept, and the pressure on the lumbar vertebra and the spine is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electric sofas, in particular to an electric leather sofa based on ergonomics. Background Art

[0002] An electric sofa is a sofa furniture with a built-in electric drive device. It uses electric drive to achieve multiple functions, such as adjusting the seat tilt angle, raising or lowering the seat height, and extending the footrest, etc., to provide a more comfortable and personalized sitting and lying experience. These functions can usually be achieved through remote controls, buttons or mobile phone applications.

[0003] Electric sofas mainly include: 1. Electric drive system, used to adjust the functions of seat tilt, lifting, etc.; 2. Seat and backrest parts to provide optimal support and comfort; 3. Adjustment mechanisms, such as guide rails and connecting rods, used to accurately control various adjustments of the seat; 4. Control panel or remote control, as the interface for users to interact with the sofa. According to the physiological characteristics of human sitting posture, most of them use comfortable materials such as memory foam to ensure that the seat and backrest fit the human body curve closely, reduce the discomfort caused by long-term sitting, and use the slow rebound characteristics of memory foam to make adaptive adjustments according to pressure distribution. However, for some users, memory foam cannot provide enough support.

[0004] The human spine normally has four physiological curves. When the human waist rests on the memory foam, a gradually adapting soft support layer is formed between the human lumbar curve and the foam. However, each person's body shape, weight, spinal curvature, etc. are different. The foam cannot find the main support position of the waist according to individual differences. For users with heavier weight, the deformation of the memory foam is limited, the body sinks too much on the sofa surface, the main force position is on the buttocks, and the spine does not get enough support; for users with lighter weight, the pressure points of the body are more concentrated, and the local support force of the memory sponge is difficult to completely disperse the force, and the memory foam cannot be fully deformed. The deformation is too small, lacking a sufficient sense of wrapping, and the spine still does not get enough support. Further consideration, for people who suffer from lumbar diseases, the physiological curvature of their spine has changed, and the memory foam will over-adapt to this abnormal curvature, unable to provide effective support, and increase the burden on the lumbar spine.

[0005] For this reason, a kind of electric leather sofa based on ergonomics is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide an electric leather sofa based on ergonomics, by adjusting the lumbar support mechanism to adapt to various support shapes such as long lumbar vertebrae, short lumbar vertebrae, large body shape, small body shape and people with lumbar diseases, the support position can be quickly found and the lumbar pressure can be reduced.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An electric leather sofa based on ergonomics, wherein a lumbar support mechanism is arranged inside the back cushion of the sofa, and soft support mechanisms are installed inside and outside the lumbar support mechanism, wherein the lumbar support mechanism comprises a movable bone block, a connecting rod, a row rod, a sponge inclusion, an end block, an L-shaped movable rod and a second electric telescopic rod, wherein a movable shaft is arranged between two movable bone blocks, and a plurality of movable bone blocks are arranged in an arc-shaped chain structure by two-to-two docking through the movable shaft, and each pair of adjacent movable bone blocks is connected by a connecting rod, and the two ends of the connecting rod are respectively sleeved on the end of the movable shaft and the adjacent movable bone blocks. In the center of the side surface of the movable bone block, two groups of arc-shaped chains are arranged, the row rods are installed between the horizontally corresponding movable bone blocks, the sponge wrapping body is sleeved on the outer surface of the row rods, the L-shaped movable rod is installed on the inner end of the lumbar support mechanism, the second electric telescopic rod is located on the upper top surface of the inner side of the L-shaped movable rod, the end blocks are respectively arranged at the two ends of the arc-shaped chain, the end block at the upper end is the movable end, and the end block at the lower end is the fixed end, the upper surface of the end block of the movable end is connected with the bottom end of the second electric telescopic rod, and the end block of the fixed end is connected with the side surface of the bottom end of the L-shaped movable rod.

[0009] It can be seen from the above scheme that the hard support structure composed of movable bones, connecting rods, and row rods can more stably support the human lumbar spine and reduce the problem of insufficient support caused by deformation or collapse of soft support materials. Although the structure is a hard support and is not as comfortable as a soft support, the movable bones and connecting rods in the design are flexible enough and can be fine-tuned according to the natural curves of the human body and changes in sitting posture, thereby providing a more fitting and stable support.

[0010] Preferably, the lumbar support mechanism also includes a U-shaped positioning rod and a first electric telescopic rod, the inner side of the U-shaped positioning rod matches the L-shaped movable rod, the U-shaped positioning rod is arranged on the inner side of the arc chain, the first electric telescopic rod is installed on the inner top surface of the U-shaped positioning rod, and the bottom end of the first electric telescopic rod is connected to the upper surface of the L-shaped movable rod.

[0011] It can be seen from the above scheme that through the adjustment of the electric telescopic rod, the user can freely adjust the height and position of the lumbar support according to his or her body shape and needs to achieve the best comfort and support effect. Although the memory foam can provide a certain degree of comfort, its supporting force and shape are relatively fixed and cannot fully adapt to the body shape and needs of all users.

[0012] Preferably, a seam strip is provided on the upper surface of the inner end of the seat cushion of the sofa, a rolling rod is installed on the upper end of the soft support mechanism, a leather cover is installed between the seam strip and the rolling rod, one end of the leather cover is connected to the seam strip, and the other end of the leather cover is wound around the surface of the rolling rod, a short arc groove is opened on one side surface of the rolling rod, and a long arc groove is opened on the other side surface of the rolling rod.

[0013] It can be seen from the above scheme that one end of the leather cover is connected to the seam strip, and the other end is rolled up on the rolling rod. This design allows the user to adjust the degree of expansion of the leather cover as needed. By rotating the rolling rod, the area covered by the leather cover on the seat cushion can be easily changed, thereby providing different degrees of support or decorative effects.

[0014] Preferably, the reeling and winding mechanism includes a central axis, a central ring, a torsion spring, a spliced ​​strip, a gravity strip, a toggle plate, an installed side wing plate and an extrusion block. The central axis is located at the center of the winding rod, the central ring is arranged at the center position of the central axis, the torsion springs are respectively located on both sides of the central ring, and the torsion spring is sleeved on the surface of the central axis, the two torsion springs are relatively positioned, the spliced ​​strip and the gravity strip are respectively located at the two ends of the torsion spring, the gravity strip matches the arc-shaped long groove, the two spliced ​​strips are respectively installed at the inner ends of the two torsion springs, the two ends of a gravity strip are connected to the outer ends of the two torsion springs, the toggle plate is arranged on the side surface of the central ring, the toggle plate matches the arc-shaped short groove, the two installed side wing plates are installed on the two side ends of the toggle plate, and the extrusion block is arranged on the side surface of the installing side wing plate.

[0015] It can be seen from the above scheme that due to the force of the torsion spring and the gravity strip, when subjected to external pressure, energy can be released quickly, and the leather case can still remain taut under frequent use.

[0016] Preferably, the soft support mechanism includes a thoracic support airbag and a sacral support airbag, which are respectively arranged at the upper and lower ends of the lumbar support mechanism and located on the inner side of the leather case. The thoracic support airbag corresponds to the thoracic position of the human body, and the sacral support airbag corresponds to the sacral position of the human body.

[0017] From the above scheme, it can be seen that the combined use of thoracic vertebra support airbags and sacral vertebra support airbags provides comprehensive and precise support for the human body. This support not only helps to maintain the natural curvature and stability of the thoracic and sacral vertebrae, but also effectively relieves the pain and discomfort caused by long-term sitting or bad posture.

[0018] Preferably, the soft support mechanism further comprises a lumbar vertebrae supporting airbag, which is arranged on the inner side of the lumbar support mechanism, and the lumbar vertebrae supporting airbag and the lumbar support mechanism correspond to the lumbar position of the human body.

[0019] It can be seen from the above scheme that the lumbar support airbag can automatically adjust the support force according to the weight and leaning strength of the human body, ensuring that the lumbar support mechanism is supported evenly. The balanced force distribution helps prevent the lumbar support mechanism from being deformed or damaged due to excessive local force.

[0020] Preferably, a first connecting tube is provided between the rear ends of the thoracic support airbag and the lumbar support airbag, and a second connecting tube is provided between the rear ends of the lumbar support airbag and the sacral support airbag, and the first connecting tube and the second connecting tube pass through the edge position of the lumbar support mechanism.

[0021] It can be seen from the above scheme that as the curvature of the waist support mechanism changes, the soft support mechanism can automatically sense and respond. When the curvature of the waist support mechanism increases, the leather case relaxes, and the soft support mechanism expands rapidly to support the leather case to ensure its tight state; conversely, when the curvature of the waist support mechanism decreases, the soft support mechanism reduces the supporting force accordingly to avoid excessive tightness.

[0022] Preferably, the soft support mechanism further comprises a buttocks supporting airbag, which is embedded and installed inside the sofa cushion through a contour frame strip.

[0023] It can be seen from the above scheme that the buttocks support airbag, as a part of the sofa cushion, can automatically adjust the supporting force according to the user's weight and body shape.

[0024] Preferably, the middle ends of the buttocks supporting airbag and the sacral supporting airbag are connected with a conducting tube, the buttocks supporting airbag is connected with the sacral supporting airbag through the conducting tube, the sacral supporting airbag is connected with the lumbar supporting airbag through the second connecting tube, and the lumbar supporting airbag is connected with the thoracic supporting airbag through the first connecting tube.

[0025] It can be seen from the above scheme that the interconnected soft support mechanisms form an overall support system, ensuring that the entire back area from the thoracic vertebrae to the sacral vertebrae can receive comprehensive and balanced support. The all-round support helps reduce back fatigue and pain caused by prolonged sitting or poor sitting posture.

[0026] Preferably, the buttocks supporting airbag comprises a sitting pressure area, a pressure channel and a response area, the sitting pressure area is distributed on both sides of the response area, the response area is separated from the sitting pressure areas on both sides by an eight-shaped bonding line, the pressure channel is located at the end of the eight-shaped bonding line, the sitting pressure area is connected with the response area through the pressure channel, and the response area is connected with the sacral supporting airbag through a conducting tube.

[0027] It can be seen from the above scheme that the linkage mechanism between the buttocks support airbag and the sacral support airbag is integrated to meet the special support needs brought by users with larger bodies. Through the linkage mechanism between the buttocks support airbag and the sacral support airbag, no matter how the user's body shape changes, stable and accurate support can be obtained.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. An electric leather sofa based on ergonomics, which achieves comprehensive adaptation to various body shapes and physiological characteristics of the lumbar spine through the lumbar support mechanism and soft support mechanism. The lumbar support mechanism adjusts the arrangement of the movable bones and connecting rods to match the waistline curvature and length of different users. The soft support mechanism uses the flexible deformation and pressure balance of the airbag to not only further enhance the personalized support effect of the back and buttocks, but also provide contour support for the lumbar support mechanism, effectively preventing the lumbar support mechanism from deformation and other problems, and then cooperating with the waist of people of various body shapes to obtain the best support.

[0030] 2. An electric leather sofa based on ergonomics, which dynamically adjusts the support shape and strength of the soft support mechanism according to the actual usage of the user. Through the close cooperation between the lumbar support mechanism and the soft support mechanism, the sofa can respond promptly when the human body sits down or stands up, and the leather cover design of fast release and slow retraction can reduce impact and stress concentration, effectively avoiding cracks and damage to the leather cover. The hip support airbag in the soft support mechanism achieves gas flow and pressure balance through the internal connecting tube. For people with larger body sizes, it can effectively prevent the sofa from sinking, maintain a correct sitting posture, and reduce pressure on the lumbar spine and spine.

[0031] 3. An electric leather sofa based on ergonomics, aimed at people with lumbar problems, can achieve long-term correction by adjusting the lumbar support mechanism to the optimal support shape, and then cooperate with the soft support mechanism, which helps to alleviate and improve lumbar problems. Among them, the setting of thoracic support airbags, lumbar support airbags and sacral support airbags further fills the back gap, provides comprehensive back support, and increases comfort. The hard support structure combined with the sponge wrapping body not only provides stable support, but also reduces the user's discomfort during the leaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a schematic structural diagram of the waist support mechanism and the soft support mechanism of the present invention;

[0034] Figure 3 It is a schematic diagram of the leather case structure of the present invention;

[0035] Figure 4 It is a schematic diagram of the overall structure of the U-shaped positioning rod of the present invention;

[0036] Figure 5 It is a schematic diagram of the overall structure of the reeling and unreeling mechanism of the present invention;

[0037] Figure 6It is a plane schematic diagram of the tilting state of the toggle plate of the present invention;

[0038] Figure 7 It is a plane schematic diagram of the toggle plate of the present invention in a pressed state;

[0039] Figure 8 It is a schematic diagram of the back structure of the soft support mechanism of the present invention;

[0040] Fig. 9 It is a schematic diagram of the interior of the sacral support airbag and the buttocks support airbag of the present invention;

[0041] Fig.10 This is a schematic diagram of the normal population using the present invention;

[0042] Fig.11 This is a schematic diagram of the use of the present invention for people with longer lumbar vertebrae;

[0043] Fig.12 This is a schematic diagram of the present invention for people with shorter lumbar vertebrae;

[0044] Fig.13 A schematic diagram of the present invention for use by people with larger bodies;

[0045] Fig.14 A schematic diagram for use with smaller people of the present invention;

[0046] Fig.15 This is a schematic diagram of the use of the present invention by people suffering from lumbar diseases.

[0047] In the figure: 1, lumbar support mechanism; 11, movable bone block; 111, movable shaft; 12, connecting rod; 13, row rod; 14, sponge inclusion; 15, end block; 16, U-shaped positioning rod; 17, first electric telescopic rod; 18, L-shaped movable rod; 19, second electric telescopic rod; 2, soft support mechanism; 21, thoracic vertebra support airbag; 22, lumbar vertebra support airbag; 23, sacral vertebra support airbag; 24, buttocks support airbag; 241, Seating area; 242, pressure channel; 243, response area; 25, first connecting pipe; 26, second connecting pipe; 27, conducting pipe; 3, reeling and winding mechanism; 31, center axis; 32, center ring; 33, torsion spring; 34, splicing strips; 35, gravity strips; 36, toggle plate; 37, mounting side wing plates; 38, extrusion block; 4, rolling rod; 41, arc-shaped short groove; 42, arc-shaped long groove; 5, seam strip; 6, leather cover. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] See also Figures 1 to 15 The present invention provides an electric leather sofa based on ergonomics, and the technical solution is as follows:

[0050] An electric leather sofa based on ergonomics, wherein a lumbar support mechanism 1 is arranged inside a back cushion of the sofa, and a soft support mechanism 2 is installed inside and outside the lumbar support mechanism 1, wherein the lumbar support mechanism 1 comprises an active bone block 11, a connecting rod 12, a row rod 13, a sponge inclusion 14, an end block 15, an L-shaped active rod 18 and a second electric telescopic rod 19, wherein an active shaft 111 is arranged between two active bone blocks 11, and a plurality of active bone blocks 11 are arranged in an arc-shaped chain structure by connecting two by two through the active shafts 111, and each pair of adjacent active bone blocks 11 is connected by a connecting rod 12, and the two ends of the connecting rod 12 are respectively sleeved on the end and the end of the active shaft 111. In the center of the side surfaces of adjacent movable bone blocks 11, two groups of arc-shaped chains are arranged, the row rods 13 are installed between the horizontally corresponding movable bone blocks 11, the sponge wrapping body 14 is sleeved on the outer surface of the row rods 13, the L-shaped movable rod 18 is installed on the inner end of the lumbar support mechanism 1, the second electric telescopic rod 19 is located on the upper top surface of the inner side of the L-shaped movable rod 18, the end blocks 15 are respectively arranged at both ends of the arc-shaped chain, the end block 15 at the upper end is the movable end, and the end block 15 at the lower end is the fixed end, the upper surface of the end block 15 at the movable end is connected to the bottom end of the second electric telescopic rod 19, and the end block 15 at the fixed end is connected to the side surface of the bottom end of the L-shaped movable rod 18.

[0051] In this embodiment, the movable bone block 11, the connecting rod 12, the row rod 13 and the sponge wrapping body 14 together form a hard support structure. The sponge wrapping body 14 wraps the row rod 13 to reduce the user's discomfort during the leaning process. The comprehensive length of the hard support structure can be adjusted by adjusting the second electric telescopic rod 19, and the support shape of the lumbar support mechanism 1 can be determined according to the waistline curvature of different user groups.

[0052] As an embodiment of the present invention, refer to Figures 1 to 4The lumbar support mechanism 1 also includes a U-shaped positioning rod 16 and a first electric telescopic rod 17. The inner side of the U-shaped positioning rod 16 matches the L-shaped movable rod 18. The U-shaped positioning rod 16 is arranged on the inner side of the arc chain. The first electric telescopic rod 17 is installed on the inner top surface of the U-shaped positioning rod 16. The bottom end of the first electric telescopic rod 17 is connected to the upper surface of the L-shaped movable rod 18.

[0053] In this embodiment, the comprehensive height of the hard support structure can be adjusted by adjusting the second electric telescopic rod 19, so as to further determine the optimal support shape of the lumbar support mechanism 1 according to the waistline curvature and length of different user groups.

[0054] As an embodiment of the present invention, refer to Figures 5 and 6 A seam strip 5 is provided on the upper surface of the inner end of the seat cushion of the sofa, a rolling rod 4 is installed on the upper end of the soft support mechanism 2, a leather cover 6 is installed between the seam strip 5 and the rolling rod 4, one end of the leather cover 6 is connected to the seam strip 5, and the other end of the leather cover 6 is wound on the surface of the rolling rod 4, an arc-shaped short groove 41 is opened on one side surface of the rolling rod 4, and an arc-shaped long groove 42 is opened on the other side surface of the rolling rod 4.

[0055] In this embodiment, due to the change in the supporting shape of the lumbar support mechanism 1, the multiple sponge wrapping bodies 14 are squeezed and deformed against each other, and the leather cover 6 covers and protects the lumbar support mechanism 1 and the soft support mechanism 2, which can not only prevent the inconvenience caused by the gap, but also provide comprehensive support for the back of the human body.

[0056] As an embodiment of the present invention, refer to Figure 5 The reeling and unwinding mechanism 3 includes a central shaft 31, a central ring 32, a torsion spring 33, a splicing strip 34, a gravity strip 35, a toggle plate 36, a mounting side wing plate 37 and an extrusion block 38. The central shaft 31 is located at the center of the reel 4, the central ring 32 is arranged at the center of the central shaft 31, the torsion springs 33 are respectively located on both sides of the central ring 32, and the torsion springs 33 are sleeved on the surface of the central shaft 31. The positions of the two torsion springs 33 are opposite, and the splicing strip 34 and the gravity strip 35 are arranged at the center of the central shaft 31. 35 are respectively located at both ends of the torsion spring 33, the gravity strip 35 matches the arc-shaped long groove 42, the two splicing strips 34 are respectively installed at the inner ends of the two torsion springs 33, the two ends of a gravity strip 35 are connected to the outer ends of the two torsion springs 33, the toggle plate 36 is arranged on the side surface of the center ring 32, the toggle plate 36 matches the arc-shaped short groove 41, the two mounting side wing plates 37 are installed on the two side ends of the toggle plate 36, and the extrusion block 38 is arranged on the side surface of the mounting side wing plate 37.

[0057] In this embodiment, since the sofa will constantly sit up and sit down during use, the contact surface between the human body and the leather cover 6 will generate a large pressure. When the back of the human body leans against the surface of the leather cover 6, the leather cover 6 wound on the surface of the rolling rod 4 is subjected to traction, which will press one end of the tilted toggle plate 36. One end of the toggle plate 36 is connected to the center ring 32 through a spring hinge. During the pressing process, the toggle plate 36 squeezes the splicing strip 34 through the squeezing block 38, which pushes the two torsion springs 33 to rotate along the center axis 31 as a whole. Using the gravity of the gravity strip 35, the torsion spring 33 will quickly rotate at a certain angle, and the leather cover 6 is no longer in a taut state. Then, when the human body leans against the leather cover 6 and applies pressure, the rolling rod 4 quickly responds to the leather cover 6, and the relaxed leather cover 6 can adapt to the back curve, reducing the sense of pressure caused by hard contact. When the back of the human body is separated from the surface of the leather cover 6, one end of the toggle plate 36 loses its The pressing force is removed, and the toggle plate 36 gradually recovers the tilted state at one end by using the spring hinge. The extrusion block 38 is connected to the splicing strip 34 in an active limit position, and the splicing strip 34 will synchronously recover to its original position. The two torsion springs 33 rotate along the central axis 31 as a whole. The torsion spring 33 applies an upward elastic force to the gravity strip 35, and the gravity strip 35 is driven to gradually move back. Due to the gravity of the gravity strip 35 itself, the gravity strip 35 will slowly recover to its original position, and the leather cover 6 will be in a taut state again. In the process of slowly winding up the leather cover 6, the movement is relatively smooth, which reduces the noise caused by material friction or collision. Through the fast-release and slow-winding design of the leather cover 6, when the human body sits down, the leather cover 6 can quickly relax and fit the back curve, reducing the stress concentration caused by sudden impact, thereby avoiding the leather cover 6 from cracking or damage due to excessive compression. When standing up, the leather cover 6 is slowly wound up to avoid excessive tension caused by rapid rebound.

[0058] As an embodiment of the present invention, refer to Figure 2 The soft support mechanism 2 includes a thoracic vertebra support airbag 21 and a sacral vertebra support airbag 23, which are respectively arranged at the upper and lower ends of the lumbar support mechanism 1 and located on the inner side of the leather cover 6. The thoracic vertebra support airbag 21 corresponds to the thoracic vertebra position of the human body, and the sacral vertebra support airbag 23 corresponds to the sacral vertebra position of the human body.

[0059] In this embodiment, since the supporting shape of the lumbar support mechanism 1 is constantly changing, gaps will occur at the thoracic and sacral positions of the back, and the gaps are filled by the thoracic support airbag 21 and the sacral support airbag 23, which not only supports the back of the human body, but also supports the compressed position of the leather case 6.

[0060] As an embodiment of the present invention, refer to Figure 2The soft support mechanism 2 also includes a lumbar support airbag 22, which is arranged on the inner side of the lumbar support mechanism 1. The lumbar support airbag 22 and the lumbar support mechanism 1 correspond to the lumbar position of the human body.

[0061] In this embodiment, the human body leans on the lumbar support mechanism 1 for a long time, and the lumbar support airbag 22 is used to counter-support the lumbar support mechanism 1, which can effectively prevent the lumbar support mechanism 1 from deformation and other problems.

[0062] As an embodiment of the present invention, refer to Figure 8 A first connecting tube 25 is provided between the two rear ends of the thoracic support airbag 21 and the lumbar support airbag 22, and a second connecting tube 26 is provided between the two rear ends of the lumbar support airbag 22 and the sacral support airbag 23. The first connecting tube 25 and the second connecting tube 26 pass through the edge position of the lumbar support mechanism 1.

[0063] In this embodiment, as the supporting shape of the lumbar support mechanism 1 continues to change, when the curvature of the lumbar support mechanism 1 becomes larger, one end of the toggle plate 36 will also be subjected to a force. Similarly to the above, when the curvature of the lumbar support mechanism 1 becomes smaller, the leather case 6 relaxes relative to the lumbar support mechanism 1, and the lumbar support mechanism 1 squeezes the lumbar support airbag 22. The lumbar support airbag 22 transfers the gas to the thoracic support airbag 21 and the sacral support airbag 23 through the first connecting tube 25 and the second connecting tube 26, respectively. The thoracic support airbag 21 and the sacral support airbag 23 expand and deform rapidly to support the leather case 6, compensate for the slack of the leather case 6, make it tight again, and avoid the leather case 6 from being incompatible with the human back.

[0064] As an embodiment of the present invention, refer to Figure 2 The soft support mechanism 2 also includes a buttocks supporting airbag 24, which is embedded in the interior of the sofa cushion through a contour frame bar.

[0065] In this embodiment, the supporting function of the sofa cushion itself is utilized. When a smaller person sits on it, the buttocks supporting airbag 24 will not be compressed and deformed. When a larger person sits on it, the downward pressure will be transmitted to the buttocks supporting airbag 24.

[0066] As an embodiment of the present invention, refer to Figure 8 The middle ends of the buttocks supporting airbag 24 and the sacral supporting airbag 23 are connected with a conducting tube 27. The buttocks supporting airbag 24 is connected with the sacral supporting airbag 23 through the conducting tube 27. The sacral supporting airbag 23 is connected with the lumbar supporting airbag 22 through the second connecting tube 26. The lumbar supporting airbag 22 is connected with the thoracic supporting airbag 21 through the first connecting tube 25.

[0067] In this embodiment, the soft support mechanisms 2 are interconnected and cooperate with each other to fill the gap area on the rear side of the leather case 6.

[0068] As an embodiment of the present invention, refer to Fig. 9 The buttocks supporting airbag 24 includes a sitting and pressing area 241, a pressure channel 242 and a response area 243. The pressing and bonding technology is adopted to control the temperature and pressure to evenly apply the bonding material on the surface of the airbag to form an eight-shaped bonding line, that is, two opposite and outwardly extending line segments that do not intersect, thereby dividing an entire airbag cushion into areas. The sitting and pressing areas 241 are distributed on both sides of the response area 243, and the response area 243 is separated from the sitting and pressing areas 241 on both sides by the eight-shaped bonding line. The pressure channel 242 is located at the end of the eight-shaped bonding line. The sitting and pressing area 241 is connected to the response area 243 through the pressure channel 242, and the response area 243 is connected to the sacral supporting airbag 23 through the conducting tube 27.

[0069] In this embodiment, when a larger person sits on the sofa, the buttocks supporting airbags 24 on both sides will be subjected to a huge force from the ischial tuberosity of the human body, and the sitting pressure area 241 will be compressed and deformed immediately. The gas inside it will quickly fill into the interior of the response area 243 along the pressure channel 242, and part of the flowing gas will enter the sacral support airbag 23 along the guiding tube 27. The sacral support airbag 23 and the response area 243 will expand rapidly, and the sacral support airbag 23 and the response area 243 will have a certain supporting effect on the lower back and thigh roots of the human body, which can effectively prevent the sofa from sinking and prevent the support position of the larger lumbar vertebra from being found incorrectly.

[0070] Working principle: The electric sofa can adjust the lumbar support mechanism 1 to adapt to various support shapes such as longer lumbar spine, shorter lumbar spine, larger body, smaller body and those with lumbar disease according to the physiological characteristics of the lumbar spine of different users. The soft support mechanism 2 provides corresponding support for the thoracic spine and sacral spine of the human body, and uses pressure balance to make the buttocks support airbag 24 achieve local contraction and local expansion, so as to control the normal sitting posture of people with larger body during use.

[0071] Specifically, when the user sits on the sofa, the height of the movable end block 15 is adjusted by the second electric telescopic rod 19 to adjust the curvature of the arc-shaped chain formed by the plurality of movable bone blocks 11, so that the arc arrangement of the plurality of row rods 13 matches the curvature of the human lumbar vertebrae, and then the overall height of the lumbar support mechanism 1 is adjusted by the first electric telescopic rod 17 to make the most convex point of the arc-shaped chain flush with the most concave point of the human lumbar vertebrae, so that the human body can fully fit with it when leaning on it.

[0072] For people with longer lumbar spine, their waistline curvature is larger, combined with Fig.11, extend the second electric telescopic rod 19, the comprehensive length of the arc chain is compressed, and then shorten the first electric telescopic rod 17 to increase its height. The most convex point of the arc chain is flush with the most concave point of the long waistline, and the overall deformation of the soft support mechanism 2 is utilized to adapt to the waistline of people with longer lumbar vertebrae.

[0073] For people with shorter lumbar spine, the waistline curvature is smaller, combined with Fig.12 , shorten the second electric telescopic rod 19, stretch the comprehensive length of the arc chain, and then extend the first electric telescopic rod 17 to lower its height. The most convex point of the arc chain is flush with the most concave point of the short waistline, and the overall deformation of the soft support mechanism 2 is utilized to adapt to the waistline of people with shorter lumbar vertebrae.

[0074] For people with larger bodies, their waistline is not obvious and will exert a greater force on the sofa cushion. Fig.13 According to the height of the group of people, the second electric telescopic rod 19 and the first electric telescopic rod 17 are adjusted accordingly to adapt and support their waistlines. When the group of people sit on the sofa, the buttocks supporting airbags 24 on both sides will be subjected to the huge force of the ischial tuberosity of the human body, and the sitting pressure area 241 will be compressed and deformed immediately. The gas inside it will quickly fill into the interior of the response area 243 along the pressure channel 242, and part of the flowing gas will enter the sacral support airbag 23 along the guide tube 27. The sacral support airbag 23 and the response area 243 will expand rapidly, and the sacral support airbag 23 and the response area 243 will have a certain lifting effect on the back waist and thigh roots of the human body, which will not only effectively improve the problem of the group of people sinking on the sofa surface, but also will not affect the waistline adaptation process of the group of people.

[0075] For people with smaller bodies, the waistline is shorter and less obvious, combined with Fig.14 By adjusting the second electric telescopic rod 19 and the first electric telescopic rod 17, the comprehensive length of the arc chain is stretched, the curvature is reduced, and the height is lowered, and the overall deformation is adjusted by using the soft support mechanism 2 to adapt to the waistline of the group of people.

[0076] For people with lumbar diseases, combined with Fig.15 According to their physiological characteristics, the lumbar support mechanism 1 is adjusted to the best supporting shape, and this group of people rely on it for a long time to achieve a corrective effect.

[0077] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric leather sofa based on ergonomics, characterized by: A lumbar support mechanism (1) is arranged inside the back cushion of the sofa, and a soft support mechanism (2) is installed inside and outside the lumbar support mechanism (1). The lumbar support mechanism (1) comprises a movable bone block (11), a connecting rod (12), a row rod (13), a sponge wrapping body (14), an end block (15), an L-shaped movable rod (18) and a second electric telescopic rod (19). A movable shaft (111) is arranged between two movable bone blocks (11). A plurality of movable bone blocks (11) are connected in pairs through the movable shaft (111) to form an arc-shaped chain structure. Each pair of adjacent movable bone blocks (11) is connected through a connecting rod (12). The two ends of the connecting rod (12) are respectively sleeved on the end of the movable shaft (111) and the adjacent movable bone blocks. The arc-shaped chain is provided in the center of the side surface of the arc-shaped chain (11), the row rod (13) is installed between the horizontally corresponding movable bone blocks (11), the sponge wrapping body (14) is sleeved on the outer surface of the row rod (13), the L-shaped movable rod (18) is installed on the inner end of the lumbar support mechanism (1), the second electric telescopic rod (19) is located on the upper top surface of the inner side of the L-shaped movable rod (18), and the end blocks (15) are respectively arranged at the two ends of the arc-shaped chain, the upper end block (15) is the movable end, and the lower end block (15) is the fixed end, the upper surface of the movable end end block (15) is connected to the bottom end of the second electric telescopic rod (19), and the fixed end end block (15) is connected to the side surface of the bottom end of the L-shaped movable rod (18).

2. The ergonomically designed electric leather sofa according to claim 1, characterized in that: The lumbar support mechanism (1) further comprises a U-shaped positioning rod (16) and a first electric telescopic rod (17), the inner side of the U-shaped positioning rod (16) matches the L-shaped movable rod (18), the U-shaped positioning rod (16) is arranged on the inner side of the arc-shaped chain, the first electric telescopic rod (17) is installed on the inner top surface of the U-shaped positioning rod (16), and the bottom end of the first electric telescopic rod (17) is connected to the upper surface of the L-shaped movable rod (18).

3. The ergonomically designed electric leather sofa according to claim 1, characterized in that: A seam strip (5) is provided on the upper surface of the inner end of the seat cushion of the sofa, a rolling rod (4) is installed on the upper end of the soft support mechanism (2), a leather cover (6) is installed between the seam strip (5) and the rolling rod (4), one end of the leather cover (6) is connected to the seam strip (5), and the other end of the leather cover (6) is wound on the surface of the rolling rod (4), one side surface of the rolling rod (4) is provided with an arc-shaped short groove (41), and the other side surface of the rolling rod (4) is provided with an arc-shaped long groove (42).

4. The ergonomically designed electric leather sofa according to claim 3, characterized in that: The reeling and unwinding mechanism (3) comprises a central shaft (31), a central ring (32), a torsion spring (33), a splicing strip (34), a gravity strip (35), a toggle plate (36), a mounting side wing plate (37) and an extrusion block (38), wherein the central shaft (31) is located at the center of the reeling rod (4), the central ring (32) is arranged at the center of the central shaft (31), the torsion springs (33) are respectively located on both sides of the central ring (32), and the torsion springs (33) are sleeved on the surface of the central shaft (31), the two torsion springs (33) are located opposite to each other, the splicing strip (34) and the gravity strip (35) are arranged opposite to each other, and the splicing strip (34) and the gravity strip (35) are arranged opposite to each other. The force strips (35) are respectively located at the two ends of the torsion spring (33), the gravity strip (35) matches the arc-shaped long groove (42), the two splicing strips (34) are respectively installed at the inner ends of the two torsion springs (33), the two ends of a gravity strip (35) are connected to the outer ends of the two torsion springs (33), the toggle plate (36) is arranged on the side surface of the center ring (32), the toggle plate (36) matches the arc-shaped short groove (41), the two installation side wing plates (37) are installed at the two side ends of the toggle plate (36), and the extrusion block (38) is arranged on the side surface of the installation side wing plate (37).

5. The ergonomically designed electric leather sofa according to claim 1, characterized in that: The soft support mechanism (2) comprises a thoracic vertebra support airbag (21) and a sacral vertebra support airbag (23), the thoracic vertebra support airbag (21) and the sacral vertebra support airbag (23) being respectively arranged at the upper end and the lower end of the lumbar support mechanism (1), and being located on the inner side of the leather cover (6), the thoracic vertebra support airbag (21) corresponding to the thoracic vertebra position of the human body, and the sacral vertebra support airbag (23) corresponding to the sacral vertebra position of the human body.

6. The ergonomically designed electric leather sofa according to claim 5, characterized in that: The soft support mechanism (2) further comprises a lumbar vertebra support airbag (22), which is arranged on the inner side of the lumbar support mechanism (1), and the lumbar vertebra support airbag (22) and the lumbar support mechanism (1) correspond to the lumbar position of the human body.

7. The ergonomically designed electric leather sofa according to claim 6, characterized in that: A first connecting tube (25) is provided between the two rear ends of the thoracic vertebra supporting airbag (21) and the lumbar vertebra supporting airbag (22), and a second connecting tube (26) is provided between the two rear ends of the lumbar vertebra supporting airbag (22) and the sacral vertebra supporting airbag (23). The first connecting tube (25) and the second connecting tube (26) pass through the edge of the lumbar support mechanism (1).

8. The ergonomically designed electric leather sofa according to claim 7, characterized in that: The soft support mechanism (2) also includes a buttocks supporting airbag (24), which is embedded and installed inside the sofa cushion through a contour frame strip.

9. The ergonomically designed electric leather sofa according to claim 8, characterized in that: The middle ends of the buttocks supporting airbag (24) and the sacral supporting airbag (23) are connected with a conducting tube (27); the buttocks supporting airbag (24) is connected to the sacral supporting airbag (23) via the conducting tube (27); the sacral supporting airbag (23) is connected to the lumbar supporting airbag (22) via a second connecting tube (26); and the lumbar supporting airbag (22) is connected to the thoracic supporting airbag (21) via a first connecting tube (25).

10. The ergonomically designed electric leather sofa according to claim 9, characterized in that: The buttocks supporting airbag (24) comprises a sitting and pressing area (241), a pressure channel (242) and a response area (243); the sitting and pressing area (241) is distributed on both sides of the response area (243); the response area (243) is separated from the sitting and pressing areas (241) on both sides by an eight-shaped bonding line; the pressure channel (242) is located at the end of the eight-shaped bonding line; the sitting and pressing area (241) is connected to the response area (243) through the pressure channel (242); and the response area (243) is connected to the sacral supporting airbag (23) through a conducting tube (27).

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